Flow measurement with diagnostics
US6654697B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1999 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Aug 27, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B21/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A fluid flow meter diagnosing the condition of its primary element or impulse lines connecting to a differential pressure sensor. A difference circuit coupled to the differential pressure sensor has a difference output representing the sensed differential pressure minus a moving average. A calculate circuit receives the difference output and calculates a trained output of historical data obtained during an initial training time. The calculate circuit also calculates a monitor output of current data obtained during monitoring or normal operation of the fluid flow meter. A diagnostic circuit receives the trained output and the monitor put and generates a diagnostic output indicating a current condition of the primary element and impulse lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.